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ICD-10-CM 2027 diagnosis code

M93.261Osteochondritis dissecans, right knee

✓ Billable / specific

M93.261 is a valid, billable ICD-10-CM code for osteochondritis dissecans, right knee. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About M93.261

M93.261 is the ICD-10-CM diagnosis code for Osteochondritis dissecans, right knee. It belongs to category M93 (other osteochondropathies), block M91-M94 (Chondropathies) and chapter 13 (diseases of the musculoskeletal system and connective tissue). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within M93.26 (Osteochondritis dissecans knee), M93.261 is specifically for Osteochondritis dissecans, right knee. Related codes cover left knee (M93.262) and unspecified knee (M93.269).

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

In MS-DRG v44.0, it is part of the grouping logic for DRG 553 (Bone Diseases and Arthropathies with MCC, relative weight 1.2494) and DRG 554 (Bone Diseases and Arthropathies without MCC, relative weight 0.8331), in MDC 08 (Diseases and Disorders of the Musculoskeletal System and Connective Tissue), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as 732.7 (Osteochondritis dissecans).

Notes that apply from higher levels

Instructions written at a parent level also apply to M93.261.

› From M93 Other osteochondropathies
Excludes2
  • osteochondrosis of spine (M42.-)

Broader instructions also apply from M91-M94 Chondropathies and Chapter 13: Diseases of the musculoskeletal system and connective tissue.

MS-DRG v44.0 grouping

All DRGs →

Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.

MDC 08 · Diseases and Disorders of the Musculoskeletal System and Connective Tissue

ICD-9-CM equivalent

Converter →
  • 732.7Osteochondritis dissecansapproximate

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about M93.261

Is M93.261 billable?

Yes. M93.261 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can M93.261 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict M93.261 as a principal diagnosis.

Is M93.261 a CC or MCC?

No. M93.261 is neither a CC nor an MCC under MS-DRG v44.0.

What DRG does M93.261 group to?

M93.261 is used in the MS-DRG v44.0 logic for MS-DRG 553 (Bone Diseases and Arthropathies with MCC) and MS-DRG 554 (Bone Diseases and Arthropathies without MCC). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.

What is the ICD-9 code for M93.261?

The CMS General Equivalence Mappings map M93.261 to ICD-9-CM 732.7.